Mowing-machine.



PATENTED JULY 10, 1906.

S. D. GRIMM.

MOWING MACHINE.

APPLICATION FILED MAY 1, 1905.

2 SHEETSSHEET 2.

lllllll l lNl/E/VTOR -STEI=H EN [1G RI MM WITNESSES:

ATFOR/VEYS UNITED STATES PATENT OFFICE.

STEPHEN DOUGLAS GRIMM,

ONE-THIRD TO GEORGE W.

KANSAS.

lVIOWlNG-IVIACHINE.

Specification of Letters Patent.

Patented July 10, 19 06.

Application filed May 1,1905. Serial No. 258.238.

To all whom it may concern:

Be it known that I, STEPHEN DOUGLAS GRIMM, a citizen of the United States, residing at Concordia, in the county of Cloud and State of Kansas, have invented a new and useful Improvement in Mowing-Machines, of which the following is a specification.

My invention is an improvement in mowing-machines; and it consists in certain novel constructions and combinations of parts, as will be hereinafter described and claimed.

Referring to the accompanying drawings, Figure 1 is a plan view of my invention applied to a mowing-machine. Fig. 2 is a side view of the machine with the cutter-bar removed. Fig. 3 is a section on line 3 3 of Fig. 1. Fig. 4 is a section on line 4 4 of Fi 3, showing the relative position of the rollers. Fig. 5 is a perspective view of one of the rollers. Fig. 6 is a perspective view of the end of the vibrating lever.

The letter A designates a mowing-machine frame having longitudinal bars a, a, and a and cross-b ars a and of. WVheels B B, keyed to a shaft 1), journaled in bearings a a on the bars a a support the frame and actuate the moving parts of the machine through a sprocket-wheel b splined on the shaft 1), and a sprocket-chain b imparting motion to a sprocket-wheel If on a counter-shaft b journaled in bearings a a on the side bars a a A sprocket-wheel b on the shaft b carries a sprocket-chain b imparting motion to a sprocket-wheel c on a shaft 0, journaled in bearings a" a on the side bars a a and pro vided outside the frame with a pinion c meshing with a pinion c on a counter-shaft c", journaled in bearings a (L12 on the lower side of the bars a a.

Rollers C C, having on their cylindrical faces symmetrical cam-grooves c c, are

splined on or otherwise secured to the shafts 0 0 respectively, and friction-rollers c c on opposite sides of a cross-plate d, engage the cam-grooves 0" 0, thus imparting a vibratory motion to the lever D. The cam-grooves c c are of such sha e that a complete vibration is imparted to t e lever D for every revolution of the rollers C, and the sprocket-wheels b If I), &c., are proportioned to properly multiply the motion of the shaft 1).

An oil-cup E, containing oil e, attached to the under sides of the bars a and a, partially encircling a pin f lever D, pivoted at d to a incloses the lower roller C in such manner that the said roller is partially immersed in in the oil, and a fender e is arranged adjacent to the face of the roller for retaining the excess of oil. The cup E extends upward some distance behind the upper roller 0, and a second fender e on the extension retains the excess of oil in thecup. The oil taken u ly the lower roller is thrown by a cent 'r igal force .upon the upper roller, and the excess is returned into the cup E by the fender e.

A finger-bar F, provided at its outer end with a shoe f and at its inner end with a shoe f, is movably connected to the framework by a connecting-bar f pivoted to an extension of the side bar a and extending into a sleeve f on a yoke f pivoted in bearings f f on the shoe f Cotter-pins f f retain the bar f in place. I

A sickle-bar f is slidably mounted on the finger-bar and retained in sliding contact therewith by T-shaped spring guards f, secured to the finger-bar, and is protected by guard-fingers f of diamond shape, rovid'e'd with recesses in which are mounte" ledgerblades G. A brace f is ivotally connected to the frame and is provi ed with an eye f on the inner shoe and secured thereto by a cotter-pin f A pitmanrod f hinged to the sickle-barf at its outer end and rovided with a socket f at its inner end, inclosing a ball (1 on the free end of the vibrating lever D, transmits motion to the sickle-bar.

The machine is provided with the usual devices for adjusting the frame and the fingerbar and for elevating and depressing the latter. As these parts, however, form no part of my invention, 1 have not deemed it necessary to describe them.

The operation of my improved machine will be clear from the descri tion of its construction, and it will be evi ent that it possesses many advantages over the ordinary form of mower. Among these may be mentioned the absence of side draft, due to the arrangement of the finger-bar at the front of the machine, thus allowing the tractive power to be applied directly to the cutting mechanism. Another important advantage is gained by the use of the symmetrical cams acting on both sides of the vibrating lever, obviating all cross-strain and reducing the friction to a minimum. The reduction of in their cylindrical faces, a multiplying-gear connecting the rollers with the drive-shaft, an oil-cup partially inclosing the rollers, a vibrating lever pivoted to the frame and pro vided with trunnions antifriction-rollers on the trunnions for engaging with the cam grooves, a sickle-bar and means connecting the vibrating lever to the sickle-bar.

4. In a mowing-machine in combination, a frame, a drive-shaft journaled in theframe, a pair of rollers journaled in the frame, and provided with symmetrically-arranged camgrooves in their cylindrical faces, an oil-cup partially inclosing the rollers, a vibrating lever, means on the lever for engaging the cam-grooves, a sickle-bar and a connecting means between the vibrating lever and the sickle-bar.

5. In a mowing-machine the combination of a fi'ame, a pair of rollers journaled in the frame, and provided with cam-grooves, arranged symmetrically vvith respect to each other, an oil-cup partially inclosing the rollers, a vibrating lever engaging the camgrooves, a sickle-bar and connecting means between the sickle-bar and the vibrating lever.

6. In a mowing-machine the combination of a frame, a pair of rollers j ournaled in the frame and provided with symmetr1callyarranged cam-grooves, an oil-cup partially inclosing the rollers, a finger-bar adjustably attached to the forward end of the frame, a sickle-bar slidably mounted on the fingerbar, a vibrating lever connected to the sicklebar, and means on the vibrating lever for en.- gaging the cam-grooves.

7. In a mowing-machine, the combination of a frame, a pair of rollers j ournaled in the frame, and provided with symmetrically-arranged cam-grooves in their cylindrical faces, a vibrating lever having antifriction-rollers for engaging the cam-grooves, a sickle-bar and a connecting means between the sicklebar and the vibrating lever. I

8. In a mowing-machine, the combination of a frame, cutting mechanism comprising a finger-bar and a sickle-bar, means for securing the cutting mechanism to the forward portion of the frame, and means for actuating the sickle-bar comprising a pitman-rod, a vibrating lever connected thereto, rollers journaledin the symmetrically arranged cam grooves on their cylindrical faces and means on the op posite faces of the vibrating lever for engaging the grooves.

In a mowing-machine, the combination of a frame, cutting mechanism connected to the forward portion of the frame, means for actuating the cutting mechanism, comprising a vibrating lever connected therewith, ro lers journaled in the frame and provided with symmetrically-arranged cam-grooves in their cylindrical faces and means on the noise is a desirable feature, due in part to the arrangement of the vibrating lever and in part to the small number of gear-wheels.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a mowing-machine a frame, a driveshaft journaled in the frame and provided with wheels for supporting the same, a sprocket-wheel on the drive-shaft, a second shaft j ournaled in the frame, a sprocketwheel thereon, a sprocket-chain connecting the sprockets, a second sprocket-wheel on the second shaft, a third shaft journaled in the frame and between the first-named shafts, a sprocket-wheel thereon, a sprocketchain connecting the sprocketwheels, a pinion on the third shaft and outside the frame, a counter-shaft journaled in the frame and beneath the third shaft, a pinion thereon and meshing with the first-named pinion, rollers on the third shaft and the counter-shaft and each provided with a cam-groove symmetrical with respect to the other, an oil-cup partially inclosing the lower roller and supplying oil thereto, a vibrating lever pivoted to the frame and provided at one end with trunnions, antifriction-rollers on the trunnions and engaging with the cam-grooves, a ball on the free end of the vibrating lever, a finger-bar movably connected to the front of the frame, a sickle-bar slidable therein, a pitman-rod hinged to the sickle-bar and provided with sockets to engage the ball on the vibrating lever.

2. A mowing-machine comprising a frame, a shaft journaled in the frame and provided with wheels for supporting the frame, a sprocket-wheel on theshaft, a second shaft journaled in the frame, a sprocket-wheel thereon, a chain connecting the sprocketwheels, a second sprocket on the second shaft, a third shaft journaled in the frame, a sprocket-wheel thereon, a chain connecting the last-named sprocket-wheels, a roller on the third shaft and having a cam-groove in the cylindrical face thereof, an oil-cup partially inclosing the roller, a counter-shaft journaled in the frame and beneath the third shaft, a roller on the counter-shaft having a cam-groove in its cylindrical face symmetrical with respect to the first-named camgroove, means for actuating the countershaft in unison with the third shaft, a vibrating lever, trunnions on the vibrating lever, and engaging with the cam-grooves, a fingerbar adjustably connected with the front end of the frame, a sickle-bar slidably mounted thereon, and a pitman-rod connecting the sickle-bar to the vibrating lever.

3. A mowing-machine comprising a frame, a drive-shaft j ournaled in the frame and provided with wheels for supporting the frame, rollers journaled in the frame and provided with symmetrically-arranged cam-grooves frame, and provided with opposite faces of the vibrating lever for engaging the grooves.

10. A mowing-machine comprising a frame, a cutting mechanism attached to the forward portion of the frame and means for actuating the cutting mechanism comprising a vibrating lever connected therewith studs on the opposite faces of the lever and cams engaging the stud for vibrating the lever.

1 1. A mowing-machine comprising a frame, a cutting mechanism hinged t0 the forward portion of the frame and means for actuating said cutting mechanism, comprising a vibrat- :ing lever, oppositely-projecting studs on the lever and symmetrical oppositelydisposed 1cams for engaging the studs on the vibrating ever.

Witnesses:

BERT DOTSON, J. B. OLIvER. 

